Golden Globe winner Joanne Froggatt stars as Police Sergeant Jackie O'Hara in The Harrowing, the next Undertow series.
A once-in-a-century storm hits the remote Scottish Island of Toll Mòr. As the isolated community takes shelter, a barbaric crime sets off a chain of events which heralds the rise of an ancient evil and threatens to change the course of history.
The Harrowing is an 8-part supernatural thriller created by acclaimed writer and director Mark Healy and produced by Storyglass.
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